PP-g-MAH增容改性木粉/PP复合材料的性能研究  

Study on Properties of Wood Flour/PP Composites Modified by Compatibilization with PP-g-MAH

作　　者：郝智[1] 尹宏[2] 罗筑[1] 何敏[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003 [2]贵州大学机械工程学院,贵州贵阳550003

出　　处：《塑料工业》2011年第11期45-47,66,共4页China Plastics Industry

基　　金：贵州省教育厅自然科学基金项目(黔教科(2010)009号)

摘　　要：以马来酸酐接枝聚丙烯 (PP-g-MAH) 为相容剂,聚丙烯 (PP) 为基体,通过熔融共混法制备了木粉/PP复合材料。研究了 PP-g-MAH 用量对复合材料力学性能及吸水性能的影响; 采用扫描电镜 (SEM) 观察了复合体系的冲击断面形貌。结果表明: 当 PP-g-MAH 的质量分数为 4%时,可以提高添加 35 份木粉复合材料体系的拉伸强度及弯曲强度,比未添加相容剂的分别提高了 49.4%和 16%,而缺口冲击强度仅下降了 9%。SEM 观察证实: PP-g-MAH 的加入有利于提高木粉与 PP 基体的界面相互作用。从吸水率来看,木粉/PP 复合材料的吸水率保持在 0.22% 以下,远低于纯木材。With PP-g-MAH as compatibilizer, PP as matrix, wood flour/PP composites were prepared by melt blending. The effect of PP-g-MAH content on the mechanical properties and water absorption properties of wood plastic composites （WPC） was studied. The impact fracture surface of the WPC was observed by means of SEM. The results showed that when the content of PP-g-MAH was 4%, the tensile strength and flexural strength of the WPC with 35% wood flour increased, respectively by 49. 4% and 16% higher than that without adding compatibilizer, and notch impact strength decreased by only 9%. SEM micrographs demonstrated that the interfacial interaction between wood flour and PP was improved with PP-g-MAH addition. From the water absorption rate, wood flour/PP composites absorption rate remained below 0.22%, far lower than the pure wood.

关 键 词：木粉/聚丙烯复合材料 增容 力学性能 吸水性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]